strong parameters and memory entry

Signed-off-by: Jonathan E. Magen <jonathan@wework.com>
added memory definition

Signed-off-by: Jonathan E. Magen <jonathan@wework.com>
added index to memory entry name

Signed-off-by: Jonathan E. Magen <jonathan@wework.com>
add memory entry id index on memory definition

Signed-off-by: Jonathan E. Magen <jonathan@wework.com>
ensured valid memory definition factory

Signed-off-by: Jonathan E. Magen <jonathan@wework.com>
Merge branch 'master' of github.com:WeWork/weboto